LYB CFO reports tax-withholding share disposition

LyondellBasell Industries N.V. executive vice president and chief financial officer Agustin Izquierdo Sabido reported a routine tax-related share disposition tied to equity compensation.

Rhea-AI Filing Summary

LyondellBasell Industries N.V. executive vice president and chief financial officer Agustin Izquierdo Sabido reported a routine tax-related share disposition tied to equity compensation. On April 15, 2026, restricted stock units vested into 182 Class A ordinary shares. To cover tax withholding obligations, the issuer withheld 45 shares at a value of $73.13 per share, a non‑market transaction made directly with the company rather than an open‑market sale. Following this event, Izquierdo Sabido directly held 33,499 Class A ordinary shares. He also holds 26,216 restricted stock units under the company’s long‑term incentive plan, scheduled to vest in multiple tranches from 2027 through 2029.

Insider Trade Summary

Exercise Price or Tax Liability: 45 shares

Exercise Price or Tax Liability 1 txn

Insider Izquierdo Sabido Agustin

Role EVP & Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Class A Ordinary Shares	45	$73.13	$3K

Holdings After Transaction: Class A Ordinary Shares — 33,499 shares (Direct)

Footnotes (2)

1. F1. On April 15, 2026 the reporting person's restricted stock units automatically vested 182 shares. 45 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.
2. F2. Represents 26,216 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 242 granted on February 22, 2024 that vest on February 22, 2027; 182 granted on April 15, 2024 that vest on April 15, 2027; 2,817 granted on February 27, 2025 that vest on February 27, 2027; 2,817 granted on February 27, 2025 that vest on February 27, 2028; 6,720 granted on February 28, 2026 that vest on February 28, 2027, 6,719 granted on February 28, 2026 that vest on February 28, 2028 and 6,719 granted on February 28, 2026 that vest on February 28, 2029.

Key Figures

Shares withheld for taxes: 45 shares Tax-withholding price: $73.13 per share Shares after transaction: 33,499 shares +3 more

6 metrics

Shares withheld for taxes 45 shares Tax-withholding disposition on April 15, 2026

Tax-withholding price $73.13 per share Value used for 45 withheld shares

Shares after transaction 33,499 shares Direct Class A ordinary shares held post-transaction

Vested RSUs 182 shares Restricted stock units vested on April 15, 2026

Outstanding RSUs 26,216 units Restricted stock units under long-term incentive plan

Future vesting period 2027–2029 Scheduled vesting years for remaining RSUs

Key Terms

restricted stock units, tax withholding obligations, long-term incentive plan

3 terms

restricted stock units financial

"On April 15, 2026 the reporting person's restricted stock units automatically vested 182 shares."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"45 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations."

long-term incentive plan financial

"Represents 26,216 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan"

A long-term incentive plan is a company program that pays executives or employees with stock, options, or cash tied to multi-year performance goals, where the rewards become theirs only after meeting conditions over time. Think of it as a delayed bonus or retirement-style reward that aligns employees’ interests with shareholders by encouraging them to boost long-term value; investors watch these plans because they affect pay costs, share dilution and management incentives.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did LYB CFO Agustin Izquierdo Sabido report in this Form 4?

He reported a routine tax-withholding disposition related to equity compensation. On April 15, 2026, 182 restricted stock units vested into shares, and 45 shares were withheld by LyondellBasell to satisfy tax withholding obligations, rather than being sold in the open market.

How many LyondellBasell (LYB) shares were withheld for taxes and at what price?

The company withheld 45 Class A ordinary shares to cover tax obligations. The shares are valued at $73.13 per share in the filing, reflecting the price used for the tax-withholding transaction, which is a non-market disposition between the issuer and the executive.

How many LYB shares does the CFO hold after this tax-withholding transaction?

After the tax-withholding disposition, the CFO directly holds 33,499 Class A ordinary shares. This figure reflects his post-transaction ownership and shows that the 45 shares withheld for taxes are small relative to his remaining direct share position in LyondellBasell.

What happened to the CFO’s restricted stock units in LyondellBasell (LYB)?

On April 15, 2026, 182 restricted stock units automatically vested into Class A ordinary shares. The filing also notes the CFO retains 26,216 restricted stock units outstanding under the company’s long-term incentive plan, scheduled to vest in multiple future tranches through 2029.

Is this LYB Form 4 an open-market sale by the CFO?

No, the filing describes a tax-withholding disposition, not an open-market sale. The 45 shares were withheld by LyondellBasell itself to satisfy tax obligations from vesting restricted stock units, a common administrative mechanism rather than a discretionary sale into the market.

How are the CFO’s remaining LYB restricted stock units scheduled to vest?

The 26,216 remaining restricted stock units vest in several tranches. Grants from 2024, 2025, and 2026 are scheduled to vest on specific dates in 2027, 2028, and 2029, reflecting a multi-year long-term incentive structure tied to ongoing service.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/17/2026 - 04:02 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Izquierdo Sabido Agustin

(Last) (First) (Middle)

4TH FLOOR

ONE VINE STREET

(Street)

LONDON W1J 0AH

(City) (State) (Zip)

UNITED KINGDOM

(Country)

2. Issuer Name and Ticker or Trading Symbol
LyondellBasell Industries N.V. [ LYB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Ordinary Shares	04/15/2026		F		45(1)	D	$73.13	33,499(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. On April 15, 2026 the reporting person's restricted stock units automatically vested 182 shares. 45 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

2. Represents 26,216 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 242 granted on February 22, 2024 that vest on February 22, 2027; 182 granted on April 15, 2024 that vest on April 15, 2027; 2,817 granted on February 27, 2025 that vest on February 27, 2027; 2,817 granted on February 27, 2025 that vest on February 27, 2028; 6,720 granted on February 28, 2026 that vest on February 28, 2027, 6,719 granted on February 28, 2026 that vest on February 28, 2028 and 6,719 granted on February 28, 2026 that vest on February 28, 2029.

Remarks:

	/s/ Lara A. Mason, Attorney-in-Fact	04/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)